Measuring instrument.



C. W. SBAMAN 6v W. vJ. CRBSSWELL. MASURING INSTRUMENT.

APPLIUATION FILVBD MAYzQ, 1911,

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fllm aim COLUMBIA PLANOGRAM! co WASHINGTON. D. C.

CHARLES W. SIEAMAN AND WILLIAM J. CRESSWELL, OF FRACKVILLE, PENNSYLVANIA.

FICE.

IVIEASURING INSTRUMENT.

To all whom t may concern.'

Be it known that we, CHARLES W. SEA- MAN and `WILLIAM J. CREsswnLL, citizens of the United States, residing at Frackville, in the county of Schuylkill, State of Pennsylvania, have invented certain new and useful. Improvements in Measuring Instruments; and we do hereby declare the fol- -lowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to combination measuring instruments, and has for its object to produce a device of this character which will be efficient and accurate in operation and may be manufactured cheaply.

In the drawings Figure 1 is a side elevation, showing the arm extended. Fig. 2 is` an edge view, with the arm folded. Fig. 3 is a longitudinal sectional view.

Referring to the drawings, the numeral 1 designates a stock, formed from wood or any suitable material, and being rectangular in shape. The stock l consists of side sections 2, each of which is provided with graduations near their edges, and are spaced apart by filling strips 3 and 4, said filling strips extending the entire length of the stock. The filling strip 3 is of less width than the strip 4, and when positioned within the stock a longitudinal bore 5 is provided, the purpose of which will be hereinafter described.

rI`he filling strip 4 is kerfed for about half of its length, thereby forming a groove G, in which the arm 7 is adapted to rest when not employed as a square, said arm being beveled at its inner end and adapted when folded to rest at the inner end of the groove 6. The groove 6 Aat its inner end is provided with rightangular recesses 8 and 9, in which a nail or the like may -be in serted to remove the arm T from the groove. The arm 7 is pivotally connected to the stock 1, near its end by a bolt 10, said arm being adapted to be locked in its extended position by a wing nut 11, carried by the bolt 10, and which will expand or contract the side sections 2 when actuated, to adjust the arm 7 in any position desired. The arm 7 is pro-vided near its pivotal point with a shoulder 12, said shoulder being adapted for contact with the end wall of notch 13 formed in the metallic wear plate 14, to

Specification of Letters Patent.

Application filed May 29, 1911.

Patented Aug. 19,1913. serial No. 630,034.

arrest and limit the movement of the arm in one direction.

The wear plate 14 is provided at one of its ends with a iange l5 which rests upon shoulders formed in the side sections 2 and filling strips 3, said plate being secured to the stock by screws. The side sections 2 are provided with semi-circular recesses 16, said recesses being so arranged as to cen-- trally position a sight pin 17 across the longitudinal bore 5. The sight pin 17 is held in the recesses 16 by the wear plate 14, said plate having its inner face in direct contact with the pin which will firmly hold the same in the recesses. Thus it will be seen that the wear plate 14 not only acts to limit the movement of the arm 7, but serves to hold the sight pin in its proper position.

Secured to the outer face of each section .2 are pointers or indicators 18 each of which being provided with a central opening, through which an arbor is passed to pivotally support the pointer or indicataor. These pointers or indicators are substantially triangular in shape, thereby providing a point and weighted lower end, which will at all times maintain the pointers in a perpendicular position.

A second wear plate 19 is secured to the end of the stock by any suitable means and is provided with a sight opening 20, and so positioned as to be in direct alinement with the longitudinal bore 5 and with an opening 21 formed in the wear plate 14, the last mentioned opening being arranged so as to be equally divided by the pin 17 at its opposite end.

It will be of co-urse understood that annular graduations are marked upon the side sections 2 to coact with the pointers or indicators 1S.

The instrument above described may be made any suitable size to suit different classes of work, the sight level forming an important part thereof when building to have the studding or the like set in their proper positions, or for any purpose for which a sight level might be used.

What is claimed, is

In an instrument of the class described, a stock consisting of side sections and spaced filling strips, one of said strips having a groove formed therein for a certain distance of its length, an arm pivotally connected to the side sections and adapted to he seated in seid groove, a shoulder formed near the In testimony whereof, We affix our sign1- pivotal end of Said arm, weer plates secured tui-es, in presence of two Witnesses.

to each end of the stock one of said Wear v I o plates being provided with notch, 'the in- VCSEXSELL 5 nel' Wall of the same oozicting With said J l shoulder to limit the movement of the arm, Vitnesses: and means for holding the arm in an ad- N. WV. HOWER, jnsted position. WML J. EVITTS.

COp'es of this patent may be obtzlned for five cents each, by addi'essing the Commissioner of Patents, Washington, D. C." 

